<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>1_字符串形式的ref</title>
</head>

<body>
    <!-- 准备好一个“容器” -->
    <div id="test"></div>

    <!-- 引入react核心库 -->
    <script type="text/javascript" src="../js/react.development.js"></script>
    <!-- 引入react-dom，用于支持react操作DOM -->
    <script type="text/javascript" src="../js/react-dom.development.js"></script>
    <!-- 引入babel，用于将jsx转为js -->
    <script type="text/javascript" src="../js/babel.min.js"></script>

    <script type="text/babel">
        class Demo extends React.Component {
            // 展示左侧输入框的数据
            showData = () => {
                const { input1 } = this.refs;
                alert(input1.value)
            }
            // 展示右侧输入框的数据
            showData2 = () => {
                const { input2 }=this.refs;
                alert(input2.value)
            }
            render() {
                return (
                    <div>
                        <input ref="input1" type="text" placeholder="点击按钮提示数据" value="提示的数据"/><br/>
                        <button onClick={this.showData}>点我提示数据</button>
                        <input ref="input2" onBlur={this.showData2} type="text" placeholder="失去焦点提示数据"/>
                    </div>
                )
            }
        }
        ReactDOM.render(<Demo a="1" b="2"/>,document.getElementById("test"))
    </script>
</body>

</html>